IDAHO STATE UNIVERSITY LASER SAFETY Policies and Procedures
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1 IDAHO STATE UNIVERSITY LASER SAFETY Policies and Procedures Prepared by: The LASER Safety Committee Idaho State University Campus Box 8106 Pocatello, Idaho (208) December 20, 2002 Approved By: (signatures on file in TSO) Director, Technical Safety Office Vice President for Academic Affairs This document was prepared for use within Idaho State University (ISU). It is intended for use by, and applies to ISU employees, staff, visitors, and students. If this document or any portion of it is used elsewhere, neither its authors nor the University accept responsibility for its contents.
2 Statement of Recognition This Policy has been adopted in large part from the Purdue University LASER Safety Policy with permission. This information may not be used for commercial development or profit. 2
3 December 2002 TABLE OF CONTENTS Section Page Preface 4 Chapter 1. Introduction to Laser Safety at Idaho State University 6 Chapter 2. Control Measures 9 I. Introduction 9 II. Engineering Controls 10 III. Administrative and Procedural Controls 11 IV. Class 3b and 4 Laser Controlled Area 12 V. Equipment Labels 14 VI. Area Posting Signs 14 Chapter 3. Laser Safety Program 16 I. Responsibility of Employees and Students Working With or Near Lasers 16 II. Responsibility of the Laser Principal Investigator 16 III. Responsibility and Authority of Laser Safety Committee 18 IV. Responsibility and Authority of Laser Safety Officer 19 V. Responsibility of Purchasing Department 20 Appendix 1. Laser Classification 21 Appendix 2. Common Laser Types and Wavelengths 22 Appendix 3. Facility and Personnel Application for Class 3b and 4 Lasers 24 Appendix 4. Guidelines for Laser Operating Procedures 29 Appendix 5. Executive Memorandum 31 Appendix 6. Laser Safety Committee Member List 33 3
4 PREFACE The purpose of this manual is to provide individuals using lasers information on laser hazards, laser-related policies and procedures, recommendations for the safe use of lasers, and laser safety training. It has been designed to provide the basis for safe laser use in the research and teaching environment without placing excessive burdens of cost or use restrictions on those responsible for laser operations. Much of the information contained herein is based on the American National Standard for Safe Use of Lasers, ANSI Z and ANSI Z The ANSI standard is the accepted standard for laser safety in the United States. Many lasers are capable of causing eye injury to anyone who looks directly into the laser output beam, or even at a specular reflection of the beam. In addition, diffuse reflection of a high-power laser beam can produce permanent eye damage. High-power laser beams can also burn exposed skin, ignite flammable materials, and cause the release of hazardous fumes, gases, and debris. Other hazards associated with the equipment and optical apparatus required to produce the lasing action and control the beam can include high-voltage, high pressure, compressed gases, cryogenics, noise, ionizing and nonionizing radiation, and toxic materials. Despite the potential hazards, laser equipment can be operated safely if the proper procedures and necessary precautions are followed. To this end, the Idaho State University Laser Safety Committee has adopted this manual. If you need additional information or assistance, contact the Idaho State University Laser Safety Officer at the ISU Technical Safety Office (TSO), phone /2311/
5 CHAPTER 1. INTRODUCTION TO LASER SAFETY AT IDAHO STATE UNIVERSITY Is my laser dangerous?! Locate the class label on the laser (Figure 1). All lasers sold in the US have one. This will tell you if it is class 1, 2, 3a, 3b, or 4.! Dangers of a class 1, 2, or 3a laser are much less significant than those of a class 3b or 4 laser. Even for these low power class lasers, however, direct exposure of the eye to the output beam can be dangerous. In addition, many of these lasers, regardless of class, have high-voltage power supplies that can be hazardous.! If you have a class 3b or 4 laser, yes, it is dangerous, and you need to be especially careful.! Refer to Appendix 1 for information on laser classification. Figure 1. Laser identification label I have a class 3b or 4 laser. What makes it dangerous to me?! Of foremost concern is the danger the laser poses to your eyesight. Irreparable damage to parts of your eye, and permanent partial or full loss of vision are possible. Lack of knowledge and training in laser safety is easily remedied and immensely valuable to helping you work safely.! High-power lasers usually have large power supplies designed to deliver large currents, often at high voltages. Accidents during troubleshooting can be fatal. Untrained personnel should stay out of the high voltage power supplies.! There have been incidents where high-power lasers have ignited laboratory equipment, leading to fire and smoke damage to the laboratory.! There may be a risk of skin damage from direct exposure to the beam.! Excimer lasers make use of reactive gases requiring special safety precautions and procedures to prevent exposure.! How each of the above risks affects you depends on the type of laser, the wavelength, pulse energy (or power for a continuous wave laser), pulse duration (or exposure duration for a continuous wave laser), and the type of application. 5
6 I m new to lasers. How do I figure out what to be concerned about in my lab?! Ask your faculty advisor about it.! Ask your faculty advisor about the laser safety training through the Technical Safety Office.! See the Idaho State University Laser Safety website Read on to learn a little more, and where to obtain more details. What is the danger to me?! Depending on the wavelength of the laser light, your cornea, lens, or retina may absorb the light. When there s too much absorption, the cells are burned, leading to damage.! Effects on the skin are both photochemical and thermal depending on the wavelength of the laser light. Symptoms range from mild reddening (erythema) to blistering and charring. Also, there are possible carcinogenic effects.! Non-beam hazards include fumes from compressed gases, cryogenic materials, noise, electrical hazards, fire, explosion, and collateral radiation. How do I know how much is too much?! Refer to the American National Standard for Safe Use of Lasers, ANSI Z136.1, for hazard analysis of several different laser types. This ANSI standard is available for checkout from the ISU Library or the TSO.! Refer to Appendix 2 for information on common types of lasers and check the laser identification label. If the data you are looking for is not there, contact the TSO. How can I avoid accidental exposure?! Follow the safety procedures for your laboratory. The TSO can help you formulate such procedures if they do not exist or are outdated.! Use correct approved laser safety goggles when appropriate. The lenses in goggles are for a specific wavelength range, and do not protect you outside of this range. Even with goggles, consider direct exposure to a laser beam to be dangerous.! One simple rule of thumb is to keep the beam horizontal and at waist level so when you are standing in the laboratory your eyes are well above the beam plane.! Question practices which appear unsafe to you. Are they necessary or outdated? Can the same function be performed in a manner which is less dangerous? Can the unsafe practices be replaced by some other diagnosis or measurement? Are work practices designed for expediency at the expense of safety? Where can I get more laser safety information at Idaho State University? Laser safety information is available in this booklet, at the website and through the TSO. 6
7 Where can I find out about procedures at Idaho State University? Procedures for the safe operation of a laser can be found in the next two chapters of this booklet. In Chapter 2 we discuss safety features that should be designed into the laser and the laboratory, as well as information on procedural and administrative policies. Procedures at Idaho State University are based on many of the guidelines developed by professional organizations such as the American National Standards Institute (ANSI). Several sections of the American National Standard for Safe Use of Lasers, ANSI Z136.1 and ANSI Z136.5, are referenced in the following sections and are denoted by parenthesis. The ANSI Standard and other laser safety references are available from the TSO for checkout. 7
8 CHAPTER 2. CONTROL MEASURES I. Introduction Control measures for Class 3b and 4 lasers are designed to reduce the possibility of eye and skin exposure to hazardous levels of radiation and to other hazards associated with the laser systems. The major causes of laser accidents in the laboratory are:! Eye exposure during alignment! Misaligned optics and upwardly directed beams! Available eye protection not used! Equipment malfunction! Improper methods of handling high-voltage circuits! Intentional exposure of unprotected personnel! Operators unfamiliar with laser equipment! Lack of protection from ancillary hazards! Improper restoration of equipment following service! Eyewear worn not appropriate for laser in use! Failure to follow Standard Operating Procedures (SOPs) Control measures are classified as engineering control measures (ANSI Z136.1 sec. 4.3) and administrative and procedural control measures (ANSI Z136.1 sec. 4.4 and 4.5). Engineering controls are those that are incorporated into the laser system and the laser laboratory. Administrative and procedural controls are methods or instructions which specify rules and/or work practices to supplement engineering controls and may require use of personal protective equipment. An example of an engineering control measure would be a laser beam stop, and an example of an administrative and procedural control measure would be the SOPs. When feasible, engineering controls are always the preferred method to provide for safety in a laser laboratory. Laser controls are designed to ensure skin and eye exposures do not exceed the applicable Maximum Permissible Exposure (MPE) limit. The MPE defines the maximum safe exposure without hazardous effect or adverse biological changes in the eye or skin. The MPE depends upon the wavelength and exposure duration. An important consideration when implementing control measures is to distinguish among operation, maintenance, and service. Control measures are based on normal operation of the laser system. When either maintenance or service is performed, it is often necessary to implement additional control measures. 8
9 II. Engineering Controls Engineering controls for Class 3b and 4 lasers are listed below. All Class 3b and 4 lasers at Idaho State University are covered by this policy, and should have the listed design features unless otherwise approved by the Laser Safety Officer (LSO). If the system is purchased in the United States, the system has as part of the design features the controls stated below. This is often indicated on the laser by a statement of certification.! A protective housing shall be provided for each laser system. The protective housing shall be interlocked such that removal of the protective housing will prevent exposure to laser radiation. Interlocks shall not be defeated or overridden during normal operation of the laser (ANSI Z136.1 sec and ANSI Z136.5 sec ).! Service access panels that allow access to the beam during operation shall either be interlocked or require a tool for removal and have an appropriate warning label (ANSI Z136.1 sec and ANSI Z136.5 sec through 4.6.3).! A Class 3b laser should have a key controlled master switch. A Class 4 laser shall have a key controlled master switch. The authority for access to the key shall be vested in the Laser Principal Investigator (LPI) (ANSI Z136.1 sec and ANSI Z136.5 sec.4.6.4).! All viewing portals, display screens, and collecting optics shall be designed to prevent exposure to the laser beam above the applicable MPE for all conditions of operation and maintenance (ANSI Z136.1 sec ).! A laser controlled area shall be designated for all unenclosed beam paths. The laser control area is defined as the area where laser radiation is in excess of the MPE. The appropriate control measures must be implemented in the laser controlled area (ANSI Z136.1 sec )! A Class 3b laser should be provided with a remote interlock connector. A Class 4 laser shall have a remote interlock connector. The remote interlock connector will decrease the laser beam power to safe levels when activated (ANSI Z136.1 sec ).! A Class 3b laser should have a permanent beam stop in place. A Class 4 laser shall have a permanent beam stop in place (ANSI Z136.1 sec ).! An alarm (for example, an audible sound such as a bell or chime), a warning light (visible through protective eyewear), or a verbal countdown command should be used at start-up of a Class 3b laser, and shall be used with Class 4 lasers. For 9
10 Class 4 laser systems, the warning should allow sufficient time to take appropriate actions to avoid exposure to the laser beam (ANSI Z136.1 sec ).! Whenever possible, Class 4 lasers should be operated and fired from a remote location (ANSI Z136.1 sec ). III. Administrative and Procedural Controls! Approval is required for each laser facility. The application should be filed for approval before work begins. Refer to Appendix 3 for information.! Standard operating procedures, with safety controls, shall be readily available for operation of the laser system (ANSI Z136.1 sec ). Refer to Appendix 4 for a guide to assist in the development of SOPs.! Each laser operator shall have the education and training level commensurate with degree of hazard and responsibility (ANSI Z136.1 sec ). Refer to Section IV of Chapter 3.! All personnel using the laser system shall be listed on the project application submitted by the LPI (ANSI Z136.1 sec ). Refer to Appendix 3 for the Laser User Application.! Alignment procedures shall be developed to ensure that eye exposure to the primary beam or to a diffuse or specular reflection does not exceed the MPE (ANSI Z136.1 sec ).! The laser facility shall be designed in such a way to limit spectator access to the laser controlled area (ANSI Z136.1 sec ).! Service personnel must comply with appropriate control procedures for the laser system and have education and training commensurate with the laser system (ANSI Z136.1 sec ).! Proper eye protection devices, specifically designed for the laser radiation, shall be worn when engineering or other administrative and procedural controls are inadequate to eliminate exposures above the MPE (ANSI Z136.1 sec ). IV. Class 3b and 4 Laser Controlled Area A. The area designated as the controlled area for Class 3b laser facilities shall have the following adequate control measures (ANSI Z136.1 sec ). 10
11 ! Operation only by qualified and authorized personnel. Refer to Section I of Chapter 3.! Appropriate warning signs at all entryways and within the area. Refer to Section VI of Chapter 3.! Supervision by an authorized LPI. Refer to Section II of Chapter 3.! Limited spectator access. Visitors must be approved by the LPI.! Appropriate beam stops for terminating potentially dangerous beams.! Only diffuse-reflective surfaces on non-optical structures in or near the beam path.! Appropriate eye protection for all personnel within the area.! Laser beam positioned well above or below eye level.! All windows, doorways, and open portals covered to prevent the laser radiation above the applicable MPE outside the laser facility.! Secured storage of laser equipment. B. In addition to the above control measures for Class 3b laser facilities, the controlled area for Class 4 laser facilities (Figure 2) shall have the following control measures (ANSI Z136.1 sec ).! All entryway controls designed to allow rapid egress.! A Panic Button shall be clearly marked and readily accessible to the laser personnel. When activated the Panic Button will reduce the output power of the laser to levels below the MPE. The following are acceptable examples of Panic Buttons. Key switches to deactivate the laser. Master switch on power source to turn off power. Red mushroom-type button on control panel or other readily accessible location within the area.! Limited Access Entryway. The LPI shall implement one of the following mechanisms to protect personnel. The LSO will be available for consultative services. 11
12 Non-Defeatable (non-override) Entryway Safety Controls- Non-defeatable entryway controls will reduce the output power of the laser to levels below the MPE when the door is opened unexpectedly. Defeatable Entryway Safety Controls- Defeatable entryway controls, with an override for safety latches and/or interlocks, may be used if it is clearly evident that there is no laser radiation hazard at the point of entry. Only adequately trained and authorized personnel may operate the overrides to enter the facility. Procedural Entryway Safety Controlso All authorized personnel shall be trained, and proper personal protective equipment (PPE) shall be available upon entry. o A secondary barrier (laser curtain) shall be used to block the laser radiation at the entryway. o At the entryway there should be a visible or audible indication that the laser is in operation. 12
13 Figure 2. Class 4 Laser Controlled Area V. Equipment Labels All lasers (except Class 1) shall have appropriate warning labels with the laser sunburst logo and the appropriate cautionary statement (Figure 1). The labels shall be affixed to both the control panel and the laser housing. Ancillary hazards shall also be appropriately labeled, but the sunburst logo is not required. VI. Area Posting Signs Areas which contain Class 2 or 3a laser systems should be posted with appropriate area postings as described in Figure 3. Areas which contain Class 3b or 4 laser 13
14 systems shall be posted with appropriate area postings as described in Figure 4. Also, the laser controlled area should be indicated with the appropriate warning sign. Figure 3. Area Posting for Class 2 and 3a Lasers Figure 4. Area Posting for Class 3b and 4 Lasers 14
15 CHAPTER 3. LASER SAFETY PROGRAM This chapter was developed to inform supervisors and operators of their roles and responsibilities to help provide a safe laser environment at Idaho State University. I. RESPONSIBILITY OF EMPLOYEES AND STUDENTS WORKING WITH OR NEAR LASERS A. Authorization An employee or student shall not operate a class 3b or 4 laser system unless authorized to do so by the LPI for that laser. The LPI may give system specific laser safety training, including this document, and grant temporary permission to use the laser, provided that official authorization is completed within 2 months after use of the laser begins. Individuals are officially authorized to use laser systems upon completing training, demonstrating competency, and submitting an application (Appendix 3). B. Compliance All employees and students shall comply with the safety rules and regulations prescribed by the LPI, LSO, and Laser Safety Committee (LSC). Employees and students shall know the operating procedures applicable to their work. C. Accident Reporting All injuries and accidents involving lasers and laser systems shall be reported to the LPI and the LSO. However, the treatment of injured personnel and the preservation of property shall be the first priority. II. RESPONSIBILITY OF THE LASER PRINCIPLE INVESTIGATOR A. Prerequisite The LPI shall know the educational and training requirements, the potential laser hazards and associated control measures, and all OPERATING procedures pertaining to laser safety for lasers and laser systems under the LPI s control. Generally the LPI is a faculty member in charge of one s laser facility. B. Training The LPI shall ensure that all laser users under his/her control are trained. Training material should include a broad understanding of hazards and controls for all lasers or all hazard classifications, especially those of class 3b and 4, the 15
16 biological effects of lasers, the laser classification system, protective equipment, and administrative controls (ANSI Z136.5 sec 5.5.4). C. Authorized Users of Laser Systems The LPI shall determine which students and employees are authorized (Appendix 3) to operate a laser system under his/her control. The LPI may grant temporary permission to use the laser, if system specific laser safety training and this document are provided before use. Official authorization must be completed within 2 months after use of the laser begins. Individuals are officially authorized to use laser systems upon completing training, demonstrating competency, and submitting an application to the TSO (Appendix 3). D. Accidents and Injuries The LPI shall notify the LSO of known or suspected laser-related accidents and injuries. The LPI shall ensure that their departmental business office is promptly notified. If necessary, the LPI will assist in obtaining appropriate medical attention for any employee or student involved in the laser accident. The LPI shall cooperate with the LSO and/or LSC during the course of their investigation and implement recommendations to prevent a recurrence. A written incident report shall be prepared by the LPI within 1 month. E. Approval of Laser System Operation The LPI shall not permit operation of a new, modified or manufactured class 3b or 4 laser under his/her authority without prior written approval of the LSO or the LSC. F. Approval of Planned Installations The LPI shall assure that plans for laser installations or modifications of installations are submitted to the LSC for approval. The LSO will act as a consultant, in conjunction with Facilities Planning, for the installation of new laser facilities. G. Operating Procedures For Class 3b and 4 laser systems, the LPI shall ensure standard operating procedures (SOPs) are developed and provided in order to prevent the operation of a laser if exposure to employees, students, visitors, or the general public could exceed the MPE. SOPs shall also be necessary for alignment, maintenance and/or service, and emergency response. 16
17 III. RESPONSIBILITY AND AUTHORITY OF LASER SAFETY COMMITTEE A. Policies and Practices The committee shall establish and maintain policies, procedures, and guidance for the control of laser hazards. Refer to Appendix 5, Idaho State University President s Executive Memorandum. B. Approval of Class 3b and 4 Laser Facility Approval of a laser or laser system for operation will be given only if the LSC is satisfied that the laser hazard control measures are adequate. These include standard operating procedures (SOPs), engineering controls for the laser, engineering controls for the laboratory or area, and administrative and procedural controls for the laser facility. Standard operating procedures for alignment, maintenance and/or service, and emergency response shall be provided as necessary. Temporary approval for operation can be given by the LSO, who will then seek final approval at the next LSC meeting. C. Standards The committee will review all applicable new or revised laser safety standards. D. Membership of Laser Safety Committee The Idaho State University Laser Safety Committee shall consist of faculty and staff who by their knowledge and experience are qualified to make judgements and recommend policy in the area of laser safety. Committee members shall be appointed by Vice President of Academic Affairs in consultation with the various deans, directors, and department heads. E. Authority The LSC and the LSO have the authority to suspend, restrict, and terminate the operation of a laser project if it is deemed that the laser hazard controls are inadequate. 17
18 IV. RESPONSIBILITY AND AUTHORITY OF LASER SAFETY OFFICER A. General The LSO will work with the individual LPI to ensure the safety standards of each laser laboratory are adequate. The LSO shall be appointed by the Vice President for Academic Affairs and has the authority to monitor and enforce the control of laser hazards and to effect training of personnel involved with the use of laser technology and applications. B. Consultative Services The LSO will provide consultative services on laser classification, hazard evaluation and controls, procedure approval, and personnel training programs. C. Training Programs Training shall be provided to each employee and student routinely operating a Class 3b or 4 laser or laser system. The level of training will be commensurate with the degree of potential laser hazards. A comprehensive laser safety program is available from the TSO. Other training programs are encouraged. The LSC should be informed of the content of these alternative programs. Training should be completed at the time work begins, but no later than 2 months subsequent to initiation of work. D. Records The LSO will ensure that the appropriate records are maintained indicating that appropriate training has been provided and all users of laser systems are listed on the appropriate projects. The LSO shall periodically contact the LPIs to ensure the laser application is current. E. Surveys and Inspections The LSO will survey all areas where Class 3b and 4 laser equipment is used. Surveys shall be performed on a regular basis, when modifications to the laser and/or laser system have occurred, before the initial operation of a new laser, or as deemed necessary. Items reviewed during the survey include but are not limited to protective equipment, signs and labels, equipment, safety features (interlocks, etc.), and training records. 18
19 The LSO will accompany regulatory agencies inspecting the laser facility. The LSO will ensure that corrective action is taken where required. F. Accidents and Injuries Upon notification of a known or suspected laser-related accident or injury, the LSO shall investigate the accident or injury and take appropriate action. The LSO shall perform a hazard evaluation of the laser facility to determine the cause of the accident, interview individuals involved in the accident, and make certain that necessary controls have been implemented before operation resumes. V. RESPONSIBILITY OF PURCHASING DEPARTMENT The Idaho State University Purchasing Department will inform the LSO of all orders for lasers and laser systems. Notification should be in the form of a copy of the Purchasing Requisition. The LSO will contact the LPI to determine if the appropriate laser safety controls are in place, and to help remedy any problems or deficiencies. The LSO may also prepare reports to appropriate agencies. Note: If a class 3b or 4 laser system is to be operated on any of the premises under the control of Idaho State University, regardless of the means by which the laser system was obtained, the planned use of that system must be approved in writing by the LSO in consultation with the LSC prior to it being initially energized at Idaho State University. This responsibility falls directly on the employees associated with organizing the activity in which the laser system is to be employed. 19
20 APPENDIX 1. LASER CLASSIFICATION CW LASERS Lasers are classified from Class 1 through Class 4, with Class 4 having the greatest hazard. Class Power Output Description 1 <0.4 μw Considered safe for continuously viewing or are designed in such a way that prevents human access to laser μw-1 mw Visible light lasers will not cause eye injury if viewed momentarily. They can possibly present an eye hazard if viewed directly for a long period of time. 3a 1 mw-5 mw Can not damage the eye within 0.25 second of the aversion response or blink reflex. Injury is possible if the beam is viewed with collecting optics or by staring at the direct beam. 3b 5 mw-500 mw Present an eye and skin hazard from viewing the direct beam or a specularly reflected beam. No production of a hazardous diffuse reflection except when viewed with collecting optics. No fire hazard is presented. 4 >500 mw These are the most hazardous lasers and may cause an eye and skin injury from the direct viewing, specular reflection, and diffuse reflection. These lasers can produce fire and generate hazardous airborne contaminants. Reference: ANSI Z
21 APPENDIX 2. COMMON LASER TYPES AND WAVELENGTHS Ultraviolet (0.180 μm μm): Laser type Wavelength (μm) Argon Fluoride Krypton Fluoride Neodymium:YAG (4 th harmonic) Argon 0.275, 0.351, Xenon Chloride Helium Cadmium Nitrogen Xenon Fluoride Neodymium:YAG (3 rd harmonic) Visible (0.400 μm μm): Laser type Wavelength (μm) Helium Cadmium Rhodamine 6G 0.450, Argon 0.457, 0.476, 0.488, Copper vapor 0.510, Krypton Neodymium:YAG (2 nd harmonic) Helium Neon 0.543, Indium Gallium Aluminum Phosphide Ruby Near-infrared (0.700 μm 1,400 μm): Laser type Wavelength (μm) Ti-Sapphire Alexandrite Gallium Aluminum Arsenide 0.780, Gallium Arsenide Neodymium:YAG Helium Neon 1.180, Indium Gallium Arsenic Phosphide
22 Mid-infrared (1.400 μm μm): Laser type Wavelength (μm) Erbium:Glass Homium Hydrogen Fluoride Erbium Far-infrared (3.000 μm 1 mm): Laser type Wavelength (μm) Helium Neon Carbon Monoxide Carbon Dioxide
23 APPENDIX 3. FACILITY AND PERSONNEL APPLICATION FOR CLASS 3b AND 4 LASERS " Form LPR-1 Application for Use of Laser Facility " Form LPR-2 Laser User Application " Form LPR-3 Laser System Registry 23
24 FORM LPR-1 Revision 1/02 IDAHO STATE UNIVERSITY Application for Use of Laser Facility Termination IMPORTANT: All classes 3b and 4 lasers used at Idaho State University are required to have an approval from the Laser Safety Committee through the ISU Technical Safety Office (TSO). Safe laser use and procedural compliance are the responsibilities of the Project Director. Date: Authorization Number: [ ] New Facility [ ] Amendment 1. Project Director 2. Department 3. Position 4. Phone 5. Office Location Authorized Users (attach FORM LPR-2 for each user) Name Department Position a) b) c) d) e) f) 8. Laser Systems to be Used (attach Form LPR-3 for each laser system) Operating Max. Power (W)/ Laser Type Class Wavelength (nm) Pulse Energy (J) Pumping Laser a) b) c) d) e) f) 9. Locations of Use (sketch the relative location of the laser system(s) in the designated room on back) Building Room Type of Use (experimental, industrial, teaching, etc.) Laser System(s) a) b) c) d) 10. Provide a brief outline in terms of the application of the laser system(s) for the project. 24
25 11. Attach standard operating procedures (SOPs) for the alignment and operation of each laser system. 12. Is there any chance that gas or aerosols will be formed? If so, what method(s) will be used to prevent inhalation of the released gas or aerosols? 13. Indicate what methods will be used to define a laser control area. This area is designated where the laser has the potential to cause injury (the entire room, inside laser curtain, behind protective barrier, etc.). 14. Specify precautions and procedures to be used by personnel to: Prevent eye and/or skin injuries (attach emergency SOPs)? Prevent unauthorized use or removal of the laser system? Prevent beam exposure in work areas and in adjacent area? 15. Laser Safety Eyewear Manufacturer Wavelength Protected Optical Density ANSI Approved a) b) c) I certify that the provided information contained in this form is true and correct to the best of my knowledge and belief. The required forms (LPR-2 and LPR-3) and SOPs are attached. Laser Project Director Signature Date Approval Recommended (LSO) Date Approved (Chair of LSC) Date 25
26 FORM LPR-2 Revision 1/02 IDAHO STATE UNIVERSITY Laser User Application Termination IMPORTANT: The applicant must attend the laser safety training and submit this application to be authorized for laser use. Previous authorized applicant at Idaho State University should indicate his/her previous project director s name. 1. Last Name First Name Middle Initial Maiden Name 2. Position 3. Department 4. Building & Room # 5. Phone 6. SSN 7. Estimated Starting Date (month/day/year) 8. Characterize the laser system(s) you are planning to use. Laser Type Class Operating Wavelength (nm) Max. Power (W)/Pulse Energy (J) a) b) c) 9. Statement of Previous Course(s), Training or Experience with Laser(s) Formal Course(s): Training On-The-Job: Experience: 10. Have you had any exposures to laser in amounts known (or suspected) to be above the ANSI Z maximum permissible exposure? Yes No Unknown TO BE COMPLETED BY PROJECT DIRECTOR Project Director Name Authorization Number Project Director Signature Date I have received, read, and understand the Idaho State University Laser Safety Guidelines and am willing to abide by the university, state, and federal regulations governing the use of lasers. I have attended the Laser Safety Training and was afforded the opportunity to ask questions addressing any concerns I have relating to the safe use of laser. I certify that the statements contained in this application are correct and complete to the best of my knowledge and belief. Applicant Signature Date 26
27 FORM LPR-3 Revision 1/02 IDAHO STATE UNIVERSITY Laser System Registry 1. Project Director 2. Department 3. Phone Laser Location (building & room) 6. Specifications of Laser System: Manufacturer Model Laser Type Class System Date Serial # PU # Manufacturer Operation Manual: Yes No Beam Diameter (cm) Beam Divergence (mradian) Beam diameter and divergence were measured at 1/e 1/e 2 90% 50% point. How many simultaneous wavelengths? What are these wavelengths? In-House Service: Yes No Service Contractor Contact CW: wavelength (nm) maximum operating power (W) average operating power (W) Pulsed: wavelength (nm) minimum pulse duration (sec) maximum pulse frequency (Hz) maximum operating energy (J) average operating energy (J) 7. Please check appropriate box for the following items: Yes No Use of cryogens Yes No Use of compressed gases Yes No Use of high voltage supplies Yes No High voltage > 30 kvp Yes No Dye laser Yes No Tunable laser Yes No Used as a pumping laser Yes No Exposed beam path Yes No Use of beam focusing optics Yes No Use of frequency doubling crystal Yes No High noise level Yes No Laser cutting/welding Yes No Home-fabricated laser Yes No Self-modified laser Registry completed by Department Date 27
28 APPENDIX 4. GUIDELINES FOR LASER OPERATING PROCEDURES These guidelines are intended to assist lasers users in preparing standard operating procedures (SOPs) for laser facilities. The information should be used as a guide to allow you to develop SOPs specific to your laser systems. Anyone writing operating procedures should be familiar with laser safety and the Idaho State University Laser Safety Policy. The Idaho State University Laser Safety Policy and ANSI Z136.1 require all SOPs for laser facilities to be approved by the LSO. It is recommended that the LSO be consulted early in the development of SOPs for guidance in determination of the specific laser hazards and required control measures. For assistance in preparation of your facilities SOPs or laser safety concerns please contact the TSO at /2311/3669 or at gesell@physics.isu.edu. I. INTRODUCTION! Describe the laser location.! Describe the laser(s) by type, classification, and technical specifications (wavelength, power/energy, pulse length, repetition rate, beam diameter and divergence, etc.)! Briefly describe the purpose of the operation. II. HAZARDS Identify and analyze the specific hazards associated with this laser operation; include beam hazards as well as any non-beam hazards (electrical, hazardous chemicals, high pressure, plume emissions, etc.) and the accessible evacuation path from the NHZ in the event of an emergency. III. HAZARD CONTROLS Describe the means used to mitigate each of the hazards listed above in the HAZARDS section. Please refer to ANSI Z136.1, the Idaho State University Laser Safety Policy, or the LSO for assistance. IV. TRAINING REQUIREMENTS Describe the training requirements for the laser operator and incidental personnel. The laser operator shall have formal training in laser safety as well as hands on training with the specific laser system. Incidental personnel shall be made aware of the specific hazards associated with the laser operation. 28
29 V. OPERATING PROCEDURES List the sequential events that describe the complete operation, including when to implement the hazard control measures. The procedures shall be written for the benefit of the laser operator who must read and understand them to perform the operation safely. VI. ALIGNMENT PROCCEDURES List the steps used to perform beam alignment on a laser or laser system. Special attention should be given to control measures that can reduce the potential for exposure. Examples for control measures are shutting down the main laser and using an alignment laser, reducing the power/energy of the laser, use of beam dumps for the primary beam, etc. All participants in areas where MPEs may be exceeded must use protective equipment. Most laser accidents from the beam occur during the alignment operation. VII. EMERGENCY PROCEDURES Describe your planned actions in case of an accident, injury, fire, or other emergency. Include names and phone numbers of those that must be contacted in case of an emergency. The procedures shall include the /2311/3669 and ISU Public 911 or Also post the emergency procedures in the laboratory. VIII. RESPONSIBILITY AND REGISTRATION State the name, title, and phone number (or office location) for the person(s) responsible for ensuring that the operation is carried out in accordance with the SOPs. All laser systems must be registered with the TSO. Refer to Appendix 3 for information. 29
30 APPENDIX 5. EXECUTIVE MEMORANDUM 30
31 31
32 APPENDIX 6. Laser Safety Committee Member List Name Department/College Phone Doug Wells Physics Kathy Blomquist College of Technology Rene Rodriguez Chemistry Rich Brey Health Physics Tom Gesell Technical Safety Office
Laser Use Registration & Application (L.U.R.)
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